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<div xmlns:ext="http://www.extjs.com" class="body-wrap"><h1>Class <a href="source/TaskMgr.html#cls-Ext.util.TaskRunner">Ext.util.TaskRunner</a></h1><table cellspacing="0"><tr><td class="label">Package:</td><td class="hd-info">Ext.util</td></tr><tr><td class="label">Defined In:</td><td class="hd-info"><a href="source/TaskMgr.html#cls-Ext.util.TaskRunner">TaskMgr.js</a></td></tr><tr><td class="label">Class:</td><td class="hd-info"><a href="source/TaskMgr.html#cls-Ext.util.TaskRunner">TaskRunner</a></td></tr><tr><td class="label">Subclasses:</td><td class="hd-info"><a href="output/Ext.TaskMgr.html" ext:cls="Ext.TaskMgr">TaskMgr</a></td></tr><tr><td class="label">Extends:</td><td class="hd-info">Object</td></tr></table><div class="description">Provides the ability to execute one or more arbitrary tasks in a multithreaded
manner. Generally, you can use the singleton <a href="output/Ext.TaskMgr.html" ext:cls="Ext.TaskMgr">Ext.TaskMgr</a> instead, but
if needed, you can create separate instances of TaskRunner. Any number of
separate tasks can be started at any time and will run independently of each
other. Example usage:
<pre><code><i>// Start a simple clock task that updates a div once per second</i>
<b>var</b> updateClock = <b>function</b>(){
Ext.fly(<em>'clock'</em>).update(<b>new</b> Date().format(<em>'g:i:s A'</em>));
}
<b>var</b> task = {
run: updateClock,
interval: 1000 <i>//1 second</i>
}
<b>var</b> runner = <b>new</b> Ext.util.TaskRunner();
runner.start(task);
<i>// equivalent using TaskMgr</i>
Ext.TaskMgr.start({
run: updateClock,
interval: 1000
});</code></pre>
<p>See the <a href="output/Ext.util.TaskRunner.html#Ext.util.TaskRunner-start" ext:member="start" ext:cls="Ext.util.TaskRunner">start</a> method for details about how to configure a task object.</p>
Also see <a href="output/Ext.util.DelayedTask.html" ext:cls="Ext.util.DelayedTask">Ext.util.DelayedTask</a>.</div><div class="hr"></div><a id="Ext.util.TaskRunner-props"></a><h2>Public Properties</h2><div class="no-members">This class has no public properties.</div><a id="Ext.util.TaskRunner-methods"></a><h2>Public Methods</h2><table cellspacing="0" class="member-table"><tbody><tr><th colspan="2" class="sig-header">Method</th><th class="msource-header">Defined By</th></tr><tr class="method-row expandable"><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.TaskRunner-TaskRunner"></a><b class="constructor"><a href="source/TaskMgr.html#cls-Ext.util.TaskRunner">TaskRunner</a></b><span class="openparen">( </span><span title="Optional" class="optional">[Number interval]</span><span class="closeparen"> )</span><div class="mdesc"><div class="short"></div><div class="long"><div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>interval</code> : Number<div class="sub-desc">(optional) The minimum precision in milliseconds supported by this TaskRunner instance
(defaults to 10)</div></li></ul><strong>Returns:</strong><ul><li>void</li></ul></div></div></div></td><td class="msource">TaskRunner</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.TaskRunner-start"></a><b class="method"><a href="source/TaskMgr.html#method-Ext.util.TaskRunner-start">start</a></b><span class="openparen">( </span><span title="Required" class="required">Object task</span><span class="closeparen"> )</span><span class="colon"> : </span><span class="return">Object</span><div class="mdesc"><div class="short">Starts a new task.</div><div class="long">Starts a new task.<div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>task</code> : Object<div class="sub-desc"><p>A config object that supports the following properties:<ul>
<li><code>run</code> : Function<div class="sub-desc"><p>The function to execute each time the task is invoked. The
function will be called at each interval and passed the <code>args</code> argument if specified, and the
current invocation count if not.</p>
<p>If a particular scope (<code>this</code> reference) is required, be sure to specify it using the <code>scope</code> argument.</p>
<p>Return <code>false</code> from this function to terminate the task.</p></div></li>
<li><code>interval</code> : Number<div class="sub-desc">The frequency in milliseconds with which the task
should be invoked.</div></li>
<li><code>args</code> : Array<div class="sub-desc">(optional) An array of arguments to be passed to the function
specified by <code>run</code>. If not specified, the current invocation count is passed.</div></li>
<li><code>scope</code> : Object<div class="sub-desc">(optional) The scope (<tt>this</tt> reference) in which to execute the
<code>run</code> function. Defaults to the task config object.</div></li>
<li><code>duration</code> : Number<div class="sub-desc">(optional) The length of time in milliseconds to invoke
the task before stopping automatically (defaults to indefinite).</div></li>
<li><code>repeat</code> : Number<div class="sub-desc">(optional) The number of times to invoke the task before
stopping automatically (defaults to indefinite).</div></li>
</ul></p>
<p>Before each invocation, Ext injects the property <code>taskRunCount</code> into the task object so
that calculations based on the repeat count can be performed.</p></div></li></ul><strong>Returns:</strong><ul><li><code>Object</code><div class="sub-desc">The task</div></li></ul></div></div></div></td><td class="msource">TaskRunner</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.TaskRunner-stop"></a><b class="method"><a href="source/TaskMgr.html#method-Ext.util.TaskRunner-stop">stop</a></b><span class="openparen">( </span><span title="Required" class="required">Object task</span><span class="closeparen"> )</span><span class="colon"> : </span><span class="return">Object</span><div class="mdesc"><div class="short">Stops an existing running task.</div><div class="long">Stops an existing running task.<div class="mdetail-params"><strong>Parameters:</strong><ul><li><code>task</code> : Object<div class="sub-desc">The task to stop</div></li></ul><strong>Returns:</strong><ul><li><code>Object</code><div class="sub-desc">The task</div></li></ul></div></div></div></td><td class="msource">TaskRunner</td></tr><tr class="method-row expandable "><td class="micon"><a href="#expand" class="exi"> </a></td><td class="sig"><a id="Ext.util.TaskRunner-stopAll"></a><b class="method"><a href="source/TaskMgr.html#method-Ext.util.TaskRunner-stopAll">stopAll</a></b><span class="openparen">(</span><span class="closeparen">)</span><span class="colon"> : </span><span class="return">void</span><div class="mdesc"><div class="short">Stops all tasks that are currently running.</div><div class="long">Stops all tasks that are currently running.<div class="mdetail-params"><strong>Parameters:</strong><ul><li>None.</li></ul><strong>Returns:</strong><ul><li>void</li></ul></div></div></div></td><td class="msource">TaskRunner</td></tr></tbody></table><a id="Ext.util.TaskRunner-events"></a><h2>Public Events</h2><div class="no-members">This class has no public events.</div></div>
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